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Changes in sinus cycle length after sequential cryoballoon ablation of individual pulmonary veins. ∗P <.001 compared to baseline, LSVP, LIVP, and RIVP. LIVP = left inferior pulmonary vein; LSVP = left superior pulmonary vein; RIVP = right inferior pulmonary vein; RSVP = right superior pulmonary vein.
